03 shut-in procedure

7/23/2019 03 Shut-In Procedure

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Shut-in ProceduresShut-in Procedures

ExxonMobil Development Company

Norman Archibald

International Drilling Schools



Shut-in ProceduresShut-in Procedures

DrillingDrilling

Tripping



I a !arning Sign is "bservedI a !arning Sign is "bserved

Driller’s ResponseDriller’s Response

– pickup the drill string until a tool jointpickup the drill string until a tool joint

clears the rotary tableclears the rotary table

– shut down the mud pump(s)shut down the mud pump(s)

– conduct a “flow check” (to confirm flow)conduct a “flow check” (to confirm flow)

f the !ell is "lowing #f the !ell is "lowing #

–shut the well in (hard shut#in)shut the well in (hard shut#in)

– Driller is empowered to act immediately$Driller is empowered to act immediately$



Steps to Shut-In the !ellSteps to Shut-In the !ell

#$ard Shut-In%#$ard Shut-In%

%& 'lose%& 'lose nnular *+nnular *+

,& *pen,& *pen -'. .al/e-'. .al/e on 'hoke 0ineon 'hoke 0ine

1& 'all 233on4obil Rig 5uper/isor 1& 'all 233on4obil Rig 5uper/isor

6& *bser/e standpipe and casing6& *bser/e standpipe and casing

annulus pressure buildupsannulus pressure buildups

7& Record readings once per minute7& Record readings once per minute

8& Record the pit gain8& Record the pit gain

9ick

-'.

*+



&ic' Circulating System&ic' Circulating System

%7

%7 # 9ick%7 # 9ick

%8 # 'losed *+%8 # 'losed *+

%: # *pened -'.%: # *pened -'.

%; # 'hoke%; # 'hoke

%< # =as uster %< # =as uster

,> # =as .ent ( away from rig ),> # =as .ent ( away from rig )

%8%:

%;

%<

,> ,% (ypass 0ine)



Shut-In PressuresShut-In Pressures

!hat do the readings tell us(!hat do the readings tell us( 5tandpipe (drill pipe surface5tandpipe (drill pipe surface

pressure) gi/es us a link topressure) gi/es us a link tothe bottom hole pressurethe bottom hole pressure

t is a direct indication of thet is a direct indication of thedifference between the poredifference between the porepressure and the mudpressure and the mudhydrostatichydrostatic

'asing (surface annulus'asing (surface annuluspressure) reading is higherpressure) reading is higherdue to the influ3due to the influ3



6>> psi 1?%>> psi 7?;>> psi

=as

7?;>> psi

=as7?;>> psi

=as

7?;>> psi

-+

7?;>> psi

-+

;?7>> psi-+

%%?,>> psi

"ormation +ressure 7?;>> psi

!E)) S$*+-IN , AS MI.A+I"N!E)) S$*+-IN , AS MI.A+I"N



Drillpipe Casing

BalanceBalance

Total pressure ondrillpipe side

Total pressureon casing side

"ormation +ressure

Kick in annulus

Clean mudin drill pipe

*-+*/E P.INCIP)E*-+*/E P.INCIP)E



Drillpipe

Mud Hydrostatic Pressure= depth x mud weight x 0.052= 15,000 x 15.0 x 0.052= 11,700 psi

BHP = HP + !"PP

= 11,700 + 7#0 psi = 12,$#0 psi

Casing (Annulus) Side

Mud Hydrostatic Pressure= 1$,%00 x 15.0 x 0.052= 11,&## psi

'as Hydrostatic Pressure

= $00 x 2.& ppg (assumed) x 0.052= $# psi

BHP = HP (Mud + 'as) + !*P = 11,&## + $# + 10$$ psi = 12,$#0

400 ft. kick

12,40 psi

1!,000 ft.

1! ppg mud

"0 psi

S#D$$

1044 psi

S#C$

Conditions Ater Shut-inConditions Ater Shut-in



!ell is shut-in000'ic' is on bottom!ell is shut-in000'ic' is on bottom

5D++

5'+

The influ3 must be pumped out of the wellThe influ3 must be pumped out of the well

through the choke&&&through the choke&&&

!hile keeping the bottom hole pressure!hile keeping the bottom hole pressure

constant and greater than formation pressureconstant and greater than formation pressure

-+ @ 5D++ A mud hydrostatic in drill string-+ @ 5D++ A mud hydrostatic in drill string



&ic' !hile +ripping Pipe&ic' !hile +ripping Pipe

"low obser/ed while tripping"low obser/ed while tripping Bow annulus and drill string are openBow annulus and drill string are open

4ust secure the well at both open ends4ust secure the well at both open ends

Drill pipe is secured first? then annulusDrill pipe is secured first? then annulus –

install and close a full opening safety /al/einstall and close a full opening safety /al/e

– close annular *+ and open -'. /al/eclose annular *+ and open -'. /al/e – install “nside *+” (drill string *+)install “nside *+” (drill string *+)

5trip pipe to bottom to circulate kick5trip pipe to bottom to circulate kick

5D++5'+



Installing Saety 1alve 2 theInstalling Saety 1alve 2 the

3Inside /"P43Inside /"P4



+ools or Securing Drill String+ools or Securing Drill String



Considerations or +op DriveConsiderations or +op Drive

E5uipmentE5uipment%& !hat is the *D and D of the lower top dri/e

/al/eC

,& !ill the /al/e pass through the current

casing sieC

1& -ow is the /al/e remo/edC

6& !hat is the connection on the top side of

the /al/eC

7& s the correct cross#o/er for the top

connection back to the drill pipe a/ailableC

8& s spare eEuipment a/ailable to re#install on

the top dri/e after stripping in the hole&



E5uipment ConigurationE5uipment Coniguration

Spare Valve

03 shut-in procedure

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